Last updated 2026-08-18
TL;DR
Alabama does not license radon mitigation contractors and has no state radon board. National NRPP or NRSB certification is the industry standard. EPA puts most Alabama homes in Zone 3 (below 2 pCi/L), but testing still makes sense. Mitigation costs nationally run $800 to $2,500, and most installs take one day or less. Confirm current fee and exam details with the certification body.
Does Alabama have a radon mitigation board?
No. Alabama has no state radon mitigation board. The closest government office is the Alabama Department of Public Health radon program, which handles education, risk communication, and testing guidance [1]. That office does not license mitigation contractors, does not issue permit numbers, and does not keep a state-approved installer list.
The distinction matters the moment a homeowner, inspector, or agent says 'the Alabama board requires' something. No such board exists. What Alabama has instead is a voluntary national certification system run by NRPP and NRSB. Those groups set the training, exam, and continuing education rules. Their certification numbers are the real paper trail in this state.
Entering radon mitigation here? Don't wait on a state board application. There isn't one. Build your file around national certification, insurance, and local building compliance.
Do you need a license for radon mitigation in Alabama?
No state radon mitigation license is required in Alabama today. ADPH's radon program does not issue one, and no state statute names radon mitigation contractors [1]. You cannot verify a state license number here because none exists.
No state license does not mean no rules. General building codes still apply. Cutting into a slab, altering crawl space drainage, or wiring a radon fan can trigger local permits or require a licensed electrician. City and county building departments answer that part. Radon competence is a separate question.
For the person doing the work, the credential that counts is voluntary certification through NRPP or NRSB. For the customer, that voluntary credential is the best available signal. A business registration from the Alabama Secretary of State proves you exist. It does not prove you can lower radon.
The honest answer: no state radon license, but don't read that as a blank check. Local codes and national certification still run the job.
How much does radon mitigation cost in Alabama?
Start with the national range, because Alabama publishes no state cost survey. EPA's Consumer's Guide to Radon Reduction says, "Radon reduction systems work. Some radon reduction systems can reduce radon levels in your home by up to 99 percent. The cost of fixing a home generally ranges from $800 to $2,500." The average sits around $1,200 [2]. For a standard sub-slab depressurization system in a slab or basement home, expect Alabama quotes inside that range.
Foundation type drives the spread. A crawl space membrane job, or a house with multiple slab sections, takes more material and more hours, so the price climbs toward the top. A single-slab ranch on flat ground can land near the bottom. Don't pay for a 'state license verification' line item in Alabama. There is no state license to verify. That's money thrown away.
Get at least three written quotes. Make each one break out the fan, pipe, sealing, electrical work, and post-mitigation test. Then you compare the same scope. The fan outlet is sometimes bundled and sometimes billed separately, so ask before the crew arrives.
Want one fixed number? You'll be disappointed. Real quotes move with site conditions. The honest anchor is the EPA average of about $1,200.
How long does radon mitigation take in Alabama?
Most residential radon mitigation jobs take one day or less. EPA's consumer guidance describes typical homes as fixable in less than a day [2]. On-site work for a standard sub-slab system usually runs four to eight hours, though no Alabama agency tracks average job hours.
That same-day window covers a straightforward slab or basement depressurization system: core a hole, run pipe, mount fan, seal, and check the pressure field. A crawl space with full membrane, or a home needing two suction points, can push into a second day. Awkward electrical panels and long exterior pipe runs add hours too.
Separate the install from the verification. The post-mitigation radon test should not start the same afternoon the fan goes in. A short-term charcoal test needs a closed-house period that often runs 48 to 96 hours depending on the device. The system may be in by 4 p.m., but the proof comes days later [7].
Don't let a contractor promise a specific hour count before seeing the foundation. One day is typical. Two days is the high end.
What radon levels are common in Alabama?
Alabama maps mostly as EPA Zone 3, meaning a predicted average indoor radon below 2 pCi/L. A band of northern counties falls into Zone 2, with predicted averages between 2 and 4 pCi/L [3]. The map is a county-level prediction, not a measurement of your house.
Here is the table that matters for reading that map:
| EPA zone | Predicted indoor average | Alabama map pattern |
|---|---|---|
| Zone 3 | below 2 pCi/L | most Alabama counties |
| Zone 2 | 2 to 4 pCi/L | northern counties near Tennessee |
| Zone 1 | 4 pCi/L or higher | not typical on Alabama map |
Source: EPA Map of Radon Zones [3].
Zone predictions are weak evidence. Two homes next door to each other can read very differently because of slab cracks, crawl space airflow, and soil gas paths. A test is the only way to know. A low predicted zone is no reason to skip one, especially if bedrooms sit in a basement or someone smokes.
The action level is 4 pCi/L. Between 2 and 4 pCi/L, EPA says consider fixing. Plenty of Alabama houses test below 2. Some test above the action level.
Is radon a problem in Alabama?
Radon causes lung cancer, full stop. CDC calls it the second leading cause of lung cancer after cigarette smoking, with about 21,000 U.S. deaths a year [4]. Alabama's low predicted zones do not erase that risk. They lower the average, not the maximum.
Most Alabama counties sit in Zone 3, so the typical test result runs lower than in, say, Iowa or Pennsylvania. But typical does not protect a specific house. A cracked slab, an open sump, or a tightly sealed crawl space can trap enough radon to exceed the action level even in a Zone 3 county.
The uncomfortable truth: Alabama tests fewer homes than high-radon states, so exceptions go undercounted. Nobody has good data on what share of Alabama basements test above 4 pCi/L. The responsible rule is to test any home with ground-contact living space or a basement bedroom.
Smoking multiplies radon risk. EPA's health guidance pairs the two as a combined exposure worse than either alone. That combination matters more in Alabama than a county color on a map [4].
What does the Alabama Department of Public Health actually do?
The Alabama Department of Public Health runs the state radon program, but it is an education and testing office, not a licensing board [1]. ADPH does not approve mitigation systems, inspect fan installs, or keep a directory of permitted radon contractors.
Its practical job is to explain radon risk, steer residents toward testing, and often make low-cost test kits available when supplies exist. Availability changes, so confirm current kit status directly with ADPH rather than counting on a permanent supply.
For a homeowner, that means a complaint about a bad mitigation job goes to normal consumer protection channels, your local building department, or court. Not to a radon board. For a contractor, it means no state certificate to renew with Alabama. Your renewal clock belongs to NRPP or NRSB.
One useful detail from the state program: it follows EPA guidance and national standards rather than writing a separate Alabama measurement rule. That keeps the paper path consistent with the rest of the country.
How do you verify a contractor in Alabama without a state board?
Ask for a current NRPP mitigation installer number or NRSB radon mitigation specialist number, then verify it on the certifying body's public directory [5][6]. Don't accept a business card that says 'certified.' Look it up.
Beyond certification, check three things in writing: insurance, local building permits where fan wiring or slab cutting requires them, and the specific post-mitigation test included in the price. A contractor who resists a written scope is a bigger red flag than a missing state license, because Alabama has no state license to show anyway.
Entering the field yourself? Your paper path is different. RadonPath sells a $149 one-time NRPP Mitigation Kit at /start that tracks the application, exam, and evidence you need before installing. It's a reference tool, not a state license, because Alabama issues none.
The rule for homeowners: in a no-board state, certification plus contract is the only real accountability.
What certification should an Alabama radon contractor hold?
Because Alabama has no state radon board, the meaningful floor is national certification. The two dominant programs are NRPP Radon Mitigation Specialist and NRSB Radon Mitigation Specialist. Both require training, an exam, continuing education, and adherence to published standards [5][6].
NRPP is the larger program and the one real estate deals and national lenders reference most. NRSB is a legitimate alternative with its own exam and code of conduct. Either one gives you a verifiable number. Neither guarantees workmanship, so pair certification with recent references and a written guarantee.
Some Alabama contractors carry a general contractor license or home builders license. Those prove legal business operation but say nothing about radon training. If a contractor offers only a general license number, ask for the radon certification too.
A plain fan system with no post-mitigation test is a waste of money, no matter how many logos ride on the truck. Certification sets a floor. It is not a finish line.
Can you install your own radon mitigation system in Alabama?
Alabama law does not stop a homeowner from installing a radon system. No state permit exists for radon mitigation specifically. That doesn't make DIY a smart move.
The fan and pipe are simple. The hard parts are pressure field diagnostics, routing condensation, sealing the right openings, and knowing whether the system actually moves soil gas. A bad install can make radon worse, especially in a crawl space with sloppy membrane details.
Electrical work is the clearest legal boundary. Hardwiring a fan or adding an outlet may require a licensed electrician and a local permit, depending on the city or county. That part is not optional just because the radon part is unlicensed.
For a one-story slab home with easy exterior pipe routing, a careful DIY project can work. For anything with a crawl space, a high baseline, or living space over a garage, hire certified help. Money saved doing it wrong gets spent on the redo and the extra test.
Do you need to test before mitigation in Alabama?
Legally no. Practically yes. Without a pre-mitigation radon test, you cannot prove the system did anything. Alabama does not require a test before installing a fan, but ADPH's whole radon program is built around testing first [1].
Use a short-term test for a fast answer or a long-term alpha track test for a better annual average. The EPA action level is 4 pCi/L. At 4 or above, fix. Between 2 and 4, consider fixing, especially with bedrooms in contact with the ground or a smoker in the house [2][7].
A radon company should not push to install before you have a number. If they do, that's a sales flag, not a safety standard. Some sellers install mitigation without a test because a buyer asked. It happens, but it's weaker evidence than a tested and retested house.
Keep a baseline before mitigation. Run a second test after. The gap between those two numbers is the only proof of a working system.
How does Alabama compare with nearby states?
Alabama sits on the permissionless end of radon regulation. It licenses neither measurement nor mitigation professionals, while some nearby states do. Florida is the clearest contrast, running a state certification program for radon businesses and individuals under the Florida Department of Health [8]. Georgia's paper path is closer to Alabama's, with less state licensing pressure in many areas.
That difference doesn't make Alabama riskier. It changes the evidence you collect. In Florida you ask for a state certificate number. In Alabama you ask for an NRPP or NRSB number. Same protection, different issuer.
For a contractor working near the state line, the rules can flip fast. Before taking a job in another state, check that state's requirements on their own. A few reference pages: Florida, Georgia, and, farther out, Alaska, Arizona, California, and Colorado.
Treat Alabama's no-board status as a reason to keep your own file tight, not a reason to skip verification.
What records should you keep after mitigation in Alabama?
Keep a file with five things: the signed mitigation proposal, the final invoice with fan and pipe specs, the startup manometer reading, the post-mitigation test report, and any fan warranty. Alabama has no state filing requirement, but this file is what a buyer or lender asks to see.
The post-mitigation test is the centerpiece. It should be a short-term or long-term test run after the system is on, with the result below 4 pCi/L. A result below 2 pCi/L is stronger evidence and often worth the extra wait.
Ask the contractor to label the system with the install date, fan model, and contact name. That label is not a government requirement. It's just good practice you can put in the contract.
Sell the house later, and these records answer the radon question faster than any state board file would. Alabama has no board, so the private file is the official file.
Where does national certification fit in Alabama?
National certification is the de facto Alabama paper path, because no state board exists. NRPP and NRSB maintain training standards, exam requirements, and public directories. Real estate agents, lenders, and home inspectors increasingly ask for certified mitigation work even in states that never license it [5][6].
Entering the trade in Alabama means your first real application goes to NRPP or NRSB, not to Montgomery. The NRPP route generally requires a course, an exam, and insurance before you can call yourself a certified mitigation installer. The NRSB route is similar but separate.
This is where the optional paperwork kit earns its keep. RadonPath's $149 one-time NRPP Mitigation Kit at /start is a checklist for the NRPP application and exam path. It does not replace the certification body, and it does not grant state authority, because Alabama grants none.
Once certified, the final proof is still the post-mitigation test result. Certification gets you to the table. A clean test keeps you there.
Frequently asked questions
Do you need a license for radon mitigation in Alabama?
No. Alabama has no state radon mitigation licensing board or contractor license. ADPH runs an education program but does not issue permits. National certification through NRPP or NRSB is voluntary but is the standard evidence of competence. Contractors may still need local electrical permits for fan wiring.
How much does radon mitigation cost in Alabama?
Alabama has no state-specific cost survey. EPA's national range is $800 to $2,500, average about $1,200, with foundation type as the main variable. Crawl space jobs and multiple suction points cost more. Get three line-item quotes; don't pay for a state license check because none exists.
How long does radon mitigation take in Alabama?
Most single-family installs take one day or less. EPA says typical homes can be fixed in less than a day. Standard sub-slab work runs four to eight hours on site. Crawl spaces and multiple suction points can stretch to two days. The post-mitigation test happens days later.
Is there a radon mitigation board in Alabama?
No. There is no Alabama radon mitigation board. The closest government entity is the ADPH radon program, which focuses on testing and education, not contractor licensing. National nonprofit certification bodies fill the oversight role. Anyone referring to an Alabama board is mixing state contact with licensure.
What radon level triggers mitigation in Alabama?
The EPA action level is 4 pCi/L. At 4 or above, fix. Between 2 and 4 pCi/L, EPA says consider fixing, especially with smoking or basement bedrooms. Alabama's predicted zones are mostly below 2, but a house-specific test overrides the map.
Can I install my own radon mitigation system in Alabama?
State law does not ban DIY radon systems. The risk is practical: bad sealing and pressure field mistakes can make radon worse. Electrical work for the fan may require a licensed electrician and local permit. For simple slab ranch homes, DIY can work; for crawl spaces, hire certified.
Does Alabama require a post-mitigation test?
No state requirement exists. But without a post-mitigation test, you can't prove the system works. Good contractors include a test in the quote. The test starts after installation and follows closed-house conditions for 48 to 96 hours for short-term devices.
How do I verify a radon contractor in Alabama?
Request an NRPP or NRSB certification number and verify it on the certifier's public directory. Ask for insurance, a written scope, and the post-test price. Alabama has no state license number, so certification plus written terms is the real verification.
Does Alabama provide radon test kits?
ADPH's radon program has historically offered low-cost test kits or pointed residents to them, but availability changes. Confirm current kit availability directly with ADPH. You can also buy short-term charcoal or long-term alpha track kits from certified labs online.
Is radon testing required in Alabama real estate transactions?
Alabama has no statewide radon testing mandate for home sales. Some lenders or buyers request it anyway, especially VA or new build. A test is cheap compared to a delayed closing; if the result is high, mitigation becomes part of the deal.
Is radon a problem in Alabama?
Yes at the individual house level. Most Alabama counties are low predicted zones, but radon causes lung cancer and exceptions exist. A cracked slab or sealed crawl space can trap enough radon to exceed the action level. Test before assuming low risk.
Who enforces radon mitigation quality in Alabama?
No state radon board does. Bad workmanship falls under normal consumer protection law, local building departments, or civil claims. The certification bodies NRPP and NRSB can enforce their own ethics and certification rules against their holders, but they are not state agencies.
Does Alabama require radon resistant new construction?
No Alabama statewide mandate requires radon-resistant new construction. Some local jurisdictions or builders add passive pipe and membrane in new homes voluntarily. If you build in a northern Zone 2 county, consider a passive system because it is cheaper before slab pour.
What's the difference between NRPP and NRSB in Alabama?
Both are national certification boards. NRPP is larger and more commonly referenced by real estate and lenders. NRSB is a legitimate alternative with similar training, exam, and continuing education. Alabama has no state preference, so either verifiable number works.
Sources
- Alabama Department of Public Health, Radon Program: ADPH runs Alabama radon education, testing guidance, and lists no state contractor licensing or mitigation board.
- U.S. EPA, Consumer's Guide to Radon Reduction: National mitigation cost range $800 to $2,500, typical install less than one day, action level 4 pCi/L, consider fixing between 2 and 4 pCi/L.
- U.S. EPA, EPA Map of Radon Zones: Alabama mostly Zone 3, with some northern Zone 2; Zone 3 below 2 pCi/L, Zone 2 2-4 pCi/L.
- CDC, Radon and Your Health: Radon is the second leading cause of lung cancer after cigarette smoking, with about 21,000 U.S. deaths a year.
- NRPP, Find a Certified Professional: Public directory to verify a contractor's NRPP mitigation certification.
- NRSB, Radon Mitigation Specialist Certification: NRSB provides radon mitigation specialist certification and standards.
- U.S. EPA, A Citizen's Guide to Radon: Testing guidance and 4 pCi/L action level, long-term vs short-term tests.
- Florida Department of Health, Radon Program: Florida DOH Radon Program page describes state certification requirements for radon businesses, in contrast to Alabama.